Insider filing · SION
Sionna Therapeutics, Inc.
SION · Healthcare · 45 filings in 24 months
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Ra Capital Management, L.P. sold $5.0M of Sionna Therapeutics (SION)
Executed Nov 17 2025, disclosed Nov 19 2025, 2 days later.
Value, as filed
$5.0M
124,870 sh across 10 lots
Executed
Nov 17 2025
the trade date, as filed
Disclosed
Nov 19 2025
2 days after the trade
Return, 21 sessionsiFrom the disclosed entry session; derived
–
purchases only
Returns are measured on stock purchases only.
The filer
RP
Ra Capital Management, L.P.
Director
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Ra Capital Management, L.P. (Director) filed 31 Form 4 reports as a reporting entity in the trailing twelve months (23 purchases, 8 sales, 1 filed past the two-business-day deadline), most often in Artiva Biotherapeutics, Inc. (ARTV). Across 22 priced purchase filings, the average 21-session return was +16.2% from execution and +14.2% from disclosure (delay-adjusted; derived). The largest single filing was $423.8M of PBLS (21,188,750 sh across 2 lots, as filed), executed Jun 11.
The name
SIONHealthcare · Sionna Therapeutics, Inc., a clinical-stage biopharmaceutical company, researches and develops medicines for the treatment of cystic fibros…
More Healthcare filings→ Insider filings, newest first→ View the original filing at www.sec.gov→Other filings by Ra Capital Management, L.P. in SION
SIONSALE
Sionna Therapeutics, Inc.
$21.8M3,448,811 sh across 2 lots
Exec Sep 17
Filed Sep 21 · 6:56 PM ET SIONPURCHASE Sionna Therapeutics, Inc. $20.2M
1,125,000 sh across 2 lots
Exec Feb 10 2025
Filed Feb 10 2025 · 5:30 PM ET